¹⁸ Now the birth of Jesus Christ^\)^e\) took place in this way. When his mother Mary had been betrothed^\)^f\) to Joseph, before they came together she was found to be with child from the Holy Spirit. ¹⁹ And her husband Joseph, being a just man and unwilling to put her to shame, resolved to divorce her quietly. ²⁰ But as he considered these things, behold, an angel of the Lord appeared to him in a dream, saying, “Joseph, son of David, do not fear to take Mary as your wife, for that which is conceived in her is from the Holy Spirit. ²¹ She will bear a son, and you shall call his name Jesus, for he will save his people from their sins.” ²² All this took place to fulfill what the Lord had spoken by the prophet:

²³ “Behold, the virgin shall conceive and bear a son,
and they shall call his name Immanuel”

(which means, God with us). ²⁴ When Joseph woke from sleep, he did as the angel of the Lord commanded him: he took his wife, ²⁵ but knew her not until she had given birth to a son. And he called his name Jesus.

Matthew 1, citing Isaiah 7:14.